Ventilator



2,493,724 6. W. BEBOUT VENTILATOR May 13 1924.

2 Sheets-Sheet 1 Filed Aug. 30. 1922 G. W. BEBOUT VENTILATOR Filed A112.50. 1922 2 Sheets-Sheet 2 gu arr um GEORGE W. BEBOUT, or mom/1on1),VIRGI IA.

VENTILATO'R.

Application filed August 30, 1922. Serial No. 585,195.

To all whom it may concern.

Be it known that I, GEORGE W. Bueour, a citizen of the United States,residing at Richmond, in the county of Henrico and State of Virginia,have invented certain new and useful Improvements in Ventilators, ofwhich the following is a specifica tion.

This invention relates to improvements in ventilators and moreespecially to a ventilator designed for use on vessels and boats of alldescriptions and also upon houses or other building structures.

One of the primary objects of the present invention is to provide aventilator in which the draft creating means is supported in a manner topermit of its free rotation,- a vane being provided in connectiontherewith so as to insure of the intake of the ventilator being at alltimes presented to the wind or inrushing air currents.

Another object of the invention is to provide a novel means forsupporting the draft creating means for turning movement in the mannerabove stated and which supporting means will provide for entire freedomof rotative movement of the draft creating means for the purposesstated.

In the accompanying drawings:

Figure 1 is a side elevation of the ventilator embodying the invention;

Fig. 2 is a vertical transverse sectional view through the ventilator;

Fig. 3 is a horizontal sectional view taken substantially on the line3-3 of Fig. 1;

Fig. 4 is a horizontal sectional view taken substantially on the line 44of Fig. 2.

The ventilator embodying the invention comprises a draft creating deviceconsisting in part of a cylindrical body 1 which is preferably open atboth of its ends and which is provided with a downwardly projectinghollow cylindrical branch 2 communicating with the body at its lowerside. Arranged within the body 1 is a Venturi tube 3 comprising anintake or velocity section 1 the major or intake end of which isarranged within one open end of the body 1 as best shown in Fig. 3 ofthe drawings. The outlet or expanding section of the Venturi tube isindicated by the numeral 5, and the two sections are, as usual, offrustoconical form and are united at their minor ends. It will now beevident that when the major or intake end of the velocity section 4: ofthe Venturi tube is presented to the wind or inrushing air currents, theair currents will pass through the section 4: with an increase invelocity and, expanding within and issuing from the section 5 of theVenturi tube, will create an upward draft through the extension 2 ofsaid tube. In order to prevent rain and snow being driven into the rearend of the body 1 and entering the down branch 2 of the body, an annularbafiie 6 is arranged within the said body 1 at one side of the openupper end of the said branch 2 and surrounds the expansion section 5 ofthe Venturitube 3 in spaced relation to said section so as to provide apassageway 7 for the air .currents and yet prevent rain or snow, orcinders being blown through the body and into the down branch.

In order that the draft creating device above described may be supportedfor free rotative movement, an upright air conduit 8 is provided andthis conduit is of cylindrical form and secured at its base 9 upon anyconvenient portion of the structure upon which the ventilator is to beinstalled. This conduit 8 is of the hollow cylindrical form shown in thedrawings and the lower portion of the branch 2 is rotatably fitted ontothe upper end of the conduit. The numeral 10 indicates a spider which isrigidly mounted in a horizontalposition in the lower portion of theconduit 8 and is provided axially with an opening 11 and in its uppersurface and surrounding said opening with a seating recess 12. A ballrace 13 is disposed within the recess 12 and surrounds the opening 11,and a spindle 14 is provided above its lower end with a circumscribingshoulder 15 and below said shoulder with a second shoulder 16, theportion of the spindle below the shoulder 16 and indicated by thenumeral 17 being of cylindrical form as are also said shoulders 15 and16. Below the portion 17 the spindle is threaded as at 18 to receive anut 19. The portion 17 of the spindle is rotatably fitted within theopening 11 in the spider 10 and also through an opening 20 formed in theball race 13. A similar race 21 is disposed above the race 13 and is ofannular form and hence provided with an opening 22 which receives thecylindrical shoulder 16 of the spindle, the lower side of the shoulder15 resting upon the upper side of said race 21. The nut 19 engages theunderside of the central portion of the spider 10, and the spindle isthus restrained against longitudinal displacement Bearing balls 23 arearranged between the races 13 and 21 and serve the usual purpose ofreducing friction. Near its upper end the spindle 1 1 is provided with acircumscribing shoulder 24 which engages the underside of the centralportion of a spider 25 which is rigidly supported in horizontal positionwithin the lower portion of the branch 2 of the body 1 immediately abovethe upper end of the conduit 8, the portion of the spindle above theshoulder extending through an opening 26 in said spider, and 'a nut 27vbeing threaded on to the upper end of the spindle and being tightenedto bear against the upper side of the said central portion of thespider.

At this point it will be evident that means is provided for supportingthe draft creating device of the ventilator so that it may have free andunrestrained rotative movement, and in order that the device may bemaintained in position with its intake presented toward the Wind orinrushing air currents, a vane 28 is fixed upon :the upper side of thebody 1 and extends longitudinally thereof and is of the general formshown in Fig. 1 of the drawings, being gradually increased in heightfrom the intakeend of the body to-the outlet end thereof.

Having thus described the invention, What is claimed as new is:

In a ventilator, a stationary air conduit, a draft creating means havingan intake branch rotatably fitting the conduit, spiders Within theconduit and branch having vertically alined openings, the spider withinthe conduit being provided with a seat surrounding the opening therein,an annular disc fitted into the seat and having an annular ball race inits upper side, an annular disc disposed above the first mentioned discand having a ball race in its under side, anti-friction balls interposedbetween the discs Within the races, a spindle having a shoulder adjacentits upper end and fitted at its said upper end through the opening inthe spider 01" the intake branch, a nut threaded upon the upper end ofthe spindle and binding against the upper side oi the spider, theshoulder upon the spindle bearing against the under side oi the saidspider, the lower end of the spindle fitting through the opening in thespider in the conduit and through the opening in the annular disc firstmentioned and having an enlarged circumferential portion fittingrotatably in the opening in the second mentioned annular disc, thespindle having a shoulder extending about its circumference and restingupon the upper side of the last mentioned annular disc, and a nutthreaded onto the lower end of the spindle and engaging the under sideof the spider in the conduit.

In testimony whereof I afi'ix my signature.

GEORGE W. BEBOUT. 1,. s. 1

